rust: drm: Pass registration data to ioctl handlers

Pass registration data to ioctl handlers via
drm::Device<Registered>::registration_data_with(). The closure's HRTB
ties the lifetime to the closure scope, and the pointer cast shortens it
from 'static internally. The reference is valid for the duration of the
drm_dev_enter/exit critical section held by RegistrationGuard.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>